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All ceramic zirconia is indicated when teeth requiring restorations present with
Heavy intrinsic discoloration
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Excessive interarch space between implant platform and opposing occlusal surface. It is INCORRECT:
Use of prefabricated abutment
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Maxillary anterior incisal edge position is determined by upper lip length at rest, fricative sounds, lower lip smile line. It is NOT determined by:
sibilant sounds
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After insertion of immediate dentures, refinement of balanced occlusion should be performed:
at 2 weeks follow up
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What determines the extent of a maxillary complete denture POSTERIOR border
location of junction between immovable and movable palate
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The recommended tooth reduction range for all ceramic restoration is
1.5 to 2 mm
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Which of the following statements regarding
osseointegrated implants and the older(geriatric) patients is true?
b. the osseointegration success rate is similar in younger versus older patients
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If the wax pattern is not sprued correctly for casting, it will result in:
- a. incomplete casting
- b. porosities
- c. turbulence in the mould
- d. all of the above
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The success rates of crown on an implant is:
a) higher than that on a natural tooth
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In patient’s with implant supported overdentures versus patient’s with conventional dentures. The alveolar ridge resorption will be:
b. less in patient’s with implant supported overdentures
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A die spacer is used to:
c. leave a space for cement
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The reason for utilizing a custom tray for making an impression for complete and removable partial dentures is that:
- a. it uses less impression material, saving some expense
- b. it enables the operator to get a uniform thickness of the impression material
- c. it can be used again and again on the same patient
- d. it has the ability to contain the flow of the material better than a stock tray
- e. all of the above
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A provisional crown that cracks across its occlusal surface during function most likely results from:
insufficient occlusal reduction
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The primary requirement for any articulator is:
to have a stable, rigid centric position.
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The following anatomical areas are considered primary retentive areas or structures for complete dentures:
b. retromylohyoid fossa
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Which of the following cements may contain polyacrylic acid in the liquid
- 1. glass ionomer
- 4. polycarboxylate
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The polished surface of the mandibular complete denture is?
Concave on the buccal and lingual
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The rule of DUML (Distal of the Upper, Mesial of the Lower) is used in the equilibration of complete dentures in?
Protrusive excursion
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The average inter-occlusal gap (IOG), based on the work of Nisswonger, for a patient with a Class I jaw relationship is?
3mm
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Bilateral Balance of a complete denture is used to insure?
stability
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Why do we use Centric Relation as a reference position?
- a. it is reproducible
- b. it is physiologically acceptable
- c. it allows control over eccentric movement
- d. all of the above
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In the totally edentulous patient what records are available to record?
- vertical dimension of rest
- centric relation
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A maxillofacial defect may result from:
- a. as a result of surgery to remove a malignant tumor
- b. as a result of a congenital anomaly
- c. as a result of trauma, such as a gunshot wound
- d. all of the above
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A facial prosthesis that replaces a missing eye, the eyelids and extraocular muscles resulting from an orbital exoneration surgery is properly termed a(n):
orbital prosthesis (Correct answer)
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An auricular prosthesis (ear prosthesis), may be retained by:
- a) medical adhesive
- b) craniofacial implants and magnets
- c) craniofacial implants and clips
- d) all of the above (Correct
- answer)
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Insufficient support of the lips resulting from anterior teeth that are located too far posteriorly is characterized by:
- 1. drooping or turning down of the corners of the mouth
- 2. deepening of the nasolabial grooves
- 3. reduction in the visible part of the vermilion border
- 4. a reduction in the prominence of the philtrum
- all of the above
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In most patients, the incisal edges of the natural lower canines and the cusp tips of the lower first premolars are:
even with the lower lip when the mouth is slightly open
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When the distobuccal flange of the maxillary denture is too thick, it will:
interfere with the movements of the coronoid process
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The recommended articulation for fabrication of a PFM on tooth #28 in an essentially intact dentition is:
hand articulation with an opposing cast is sufficient
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The order of assessment and correction of an all gold crown on #30 should be:
contact, internal fit, occlusion
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The causes of cheek biting in removable prosthesis may be :
due to insufficient horizontal overlap
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Immediate dentures:
are dentures that are inserted immediately after the teeth are extracted
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When fabricating immediate dentures:
since mandibular ridges often lead to an unstable prosthesis, immediate complete mandibular dentures should rarely be fabricated in the mandible
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Indication for placement of a dowel and core include
anterior teeth with RCT and insufficient core structure for final restoration
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One of the most common models of failure for dowel is
loosening of the dowel
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What are the characteristic of a root preparation to receive a dowel (post)
The preparation should extend 3/4 of the length of the rrot
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The purpose of the ferrule in an RCT treated tooth is
to provide the necessary tooth structure for fabrication of a successful crown restoration
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When the decay extend subgingival and there is not sufficient tooth structure
Crown lengthening is indicated to expose healthy tooth structure
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A custom incisal guide table
Guide the lab in waxing the lingual contours of final restoration of anterior teeth
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The patient is lisping when wearing the new complete denture. The most likely cause is
Poor arrangement of upper anterior teeth
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What is the most accurate technique for checking the internal fit of a crown restoration with margins located subgingivally?
Use disclosing agents to verify complete seat of the restoration
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What would determine the need for remount and equilibration of processed dentures prior to insertion?
A significant occlusal discrepancy in centric relation
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Loose denture in the first post insertion appointment
- Inadequate posterior palatal seal
- Over extended border
- Under extended border
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Zirconia all ceramic restoration is contraindicated for all of the following except
Discolored tooth requiring all ceramic restoration
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Which of the following cement types requires more cement-film thickness and provides the highest bond strength?
a) Polycarbosylate cement
b) Glass ionomer cement
c) Resin cement
d) Zinc phosphate cement
Resin cement
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Which type of bone requires the longest healing period?
Type 4
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Erosion of teeth can be caused by all of the following...... except?
All ceramic restorations
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The primary purpose of immediate denture is to
protect the edentulous ridge after extraction
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Reline of the removable prosthesis is recommended
In the presence of inadequate tissue contact with the denture base. (minimal to moderate changes)
- Reasons for relining:
- loss retention and stability
- loss of VDO
- Esthetics concerns
- Patient discomfort
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Replacement of the denture base w/o changing the occlusal relation of the teeth
Rebasing
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The most advantageous region for placing an implant due to bone type is
Mandibular anterior
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